Device that measures exhalation duration



1. Device that measures exhalation duration

1.1 : Perspective

1.2 : Right

1.3 : Left

1.4 : Front

1.5 : Back

1.6 : Top

1.7 : Bottom

The broken lines are for the purpose of illustrating the position of electrodes that form no part of the claimed design. 

CLAIM The ornamental design for a device that measures exhalation duration, as shown and described. 